python - What does if __name__ == "__main__": do? - Stack Overflow
Jan 7, 2009 · if __name__ == "__main__" is the part that runs when the script is run from (say) the command line using a command like python myscript.py. Share Improve this answer
What does the if __name__ == “__main__”: do? - GeeksforGeeks
Aug 25, 2023 · Every Python module has it’s __name__ defined and if this is ‘__main__’, it implies that the module is being run standalone by the user and we can do corresponding appropriate actions. If you import this script as a module in another script, the __name__ is set to the name of the script/module.
What Does if __name__ == "__main__" Do in Python?
Nov 30, 2024 · Python’s if __name__ == "__main__" idiom allows code to run only when the script is executed, not when it’s imported. The idiom checks if the __name__ variable equals "__main__", confirming that the script is the top-level module. Using this idiom helps prevent unintended code execution during module imports.
Python if __name__ == __main__ Explained with Code Examples
Jul 3, 2020 · When the Python interpreter reads a file, the __name__ variable is set as __main__ if the module being run, or as the module's name if it is imported. Reading the file executes all top level code, but not functions and classes (since they will only get imported).
if __name__ == "__main__" Python: Complete Explanation
Aug 12, 2024 · The idiom if __name__ == "__main__" is an if statement that checks for equality. The first operand on the left of the equality operator == is the attribute __name__. Python names with leading and trailing double underscores are special identifiers. Every module has a __name__ attribute. Python sets this variable to the module name, which Python ...
Why Every Python Script Has if __name__ == ‘__main__’: — And …
Apr 12, 2025 · What Is a Python Script? A script is a Python file that is run directly. When you run a script, Python executes the code line by line. python example_module.py Can a File Be Both a Module and a Script? Yes! A Python file can be both: A module, when imported using import. A script, when executed directly using the command line.
What Does “If __name__ == ‘__main__’” Do in Python?
Oct 24, 2024 · The “if __ name __ == '__ main __'” statement in Python checks if the current script is being run directly as the main program, or if it’s being imported as a module into another program. __name__ is a variable that exists in every Python module, and …
Python Main Function: Understanding and Using if __name__
The Python "main" construct i.e., if __name__ == "__main__", plays an important role in controlling the execution of all your Python scripts. It allows you to differentiate between script execution as a standalone program or as an imported module.
Demystifying `if __name__ == __main__` in Python - CodeRivers
Jan 23, 2025 · The if __name__ == "__main__" statement in Python is a powerful tool for creating modular, testable, and well - organized code. Understanding how it works and following best practices when using it can significantly improve the quality of your Python projects.
Python if name == ‘main‘ Explained with Code Examples – …
Dec 8, 2024 · Understanding how it works along with leveraging if __name__ == ‘__main__‘ blocks can help create reusable code and control what runs during module imports. In this comprehensive guide, we will dig into several code examples to fully grasp these key Python programming concepts related to __name__.
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